As an important component of LIBs, the electrode material plays a crucial role in determining the lithium (Li) storage performance in LIBs. In this study, MoS₂ nano-flowers were synthesized using a one-pot hydrothermal method. The resulting MoS₂ nano-flower, along with PAN, were used as raw materials for electrospinning. After annealing treatment, MoS₂/(carbon nanofibers) CNFs nano-composites coated with carbon fibers were formed. The CNFs coating exhibited electrical conductivity and enhanced structural stability of the MoS₂ due to the stabilizing effect of the carbon fibers. Additionally, electrochemical tests, including CV and GCD, indicated that the optimal capacity and cycling stability were achieved when the MoS₂ content was 10%. The results indicated that the charge/discharge capacity of MoS₂/CNFs-10% at a current density of 100 mA/g was ~650 mAh/g. After the cycling current returned to 100 mA/g, the current recovery was ~600 mAh/g, thereby indicating outstanding cycling stability. Accordingly, our fabrication technique and new insight could both widen design strategy of multicomponent composite electrode materials and promote the practical applications of the latest emerging transition metal sulfides in next-generation high-performance lithium-ion batteries.

Abdominal aortic aneurysm (AAA) is the most common vascular disease that causes disability and death. Its morbidity is relatively subtle, and the mortality rate is high. Clinically, endovascular aortic aneurysm repair (EVAR) has gradually become the primary treatment of AAA due to its unique advantages such as low trauma and low incidence of short-term complications. However, the outcome of EVAR is greatly compromised by the possible occurrence of endoleaks. Contrast-enhanced ultrasound (CEUS) is a promising alternative technique to detect endoleaks following EVAR due to lack of exposure to ionizing radiation. Traditional ultrasound contrast agents with an overlarge size (microscale) leading to reluctant accumulation in target organs and instability trigger the requirement of nanoscale contrast agents that enter tumor tissues through the enhanced permeability and retention effect. In this study, we used ultrasound based on nanoscale bubble contrast agents to evaluate endoleak detection after endovascular aortic aneurysm repair and analyzed the effects of nanoscale bubble contrast agents on vascular smooth muscle cell (VSMC) proliferation and migration. Among 52 AAA patients a month following EVAR, there were 16 cases of endoleaks after EVAR detected by nanobubble contrast-enhanced ultrasound, including 6 cases of type I endoleak (1 case of type Ia endoleak and 5 cases of type Ib endoleak), 7 cases of type II endoleak, and 3 cases of type III endoleak; there were 12 cases of endoleak after EVAR detected by computed tomography angiography (CTA), including 6 cases of type I endoleak (1 case of type Ia and 5 cases of type Ib), 5 cases of type II endoleak, and 1 case of type III endoleak. Six months after EVAR, 3 cases of type III endoleak were detected by both nanobubble contrast-enhanced ultrasound and CTA. Vascular smooth muscle cells (VSMCs) used for in vitro experiments were subjected to ultrasound irradiation and platelet-derived growth factor (PDGF) treatment with or without the addition of nanobubble contrast agents. After high-intensity and long-term irradiation (0.75 W/cm² and 1 W/cm² irradiation for 120 s and 150 s, respectively) by ultrasound with or without the addition of nanobubble contrast agents, PDGF-induced VSMC migration was inhibited ( ). Low-intensity and short-term ultrasound irradiation did not differ PDGF-induced VSMC migration ( ), but 0.5 W/cm² and 90 s ultrasound irradiation could significantly inhibit PDGF-induced VSMC migration without the addition of nanobubble contrast agents ( ). When VSMCs were irradiated at 1, 0.75, 0.5, and 0.35 W/cm² for 30 s to 150 s, ultrasound irradiation with or without the addition of nanobubble contrast agents remarkably reduced PDGF-induced VSMC proliferation, as evidenced by reduced OD values ( ). In conclusion, ultrasound based on nanoscale bubble contrast agents is an effective alternative detection method for the occurrence of AAA patients who are not suitable for CTA.

The intelligent design of advanced anode materials plays a pivotal role in energy storage for lithium-ion (LIBs) and sodium-ion batteries (SIBs), and offering potential for broadening their practical applications through the development of flexible electrodes. In this study, Nickel hydroxide nanoflowers grown on Ni foam (Ni(OH)₂ NFs/NF) was synthesized by hydrothermal method. Subsequently nickel hydroxide nanoflowers-polyaniline (Ni(OH)₂ NFs/PANI) was synthesized by electrodeposition method. Ni(OH)₂ NFs/NF and Ni(OH)₂ NFs/PANI can be straightforwardly utilized as pliable electrodes. For the first discharge capacity, Ni(OH)₂ NFs/PANI electrode delivers higher capacity (1608.1 mAh g⁻¹) than Ni(OH)₂ NFs/NF (1464.1 mAh g⁻¹) for LIBs. For the first discharge capacity, Ni(OH)₂ NFs/PANI electrode delivers more superior capacity (473.4 mAh g⁻¹) than Ni(OH)₂ NFs/NF (406.6 mAh g⁻¹) for SIBs. Ni(OH)₂ NFs/PANI electrode demonstrated enhanced rate performance and cycling stability in comparison to Ni(OH)₂ NFs/NF electrode.